Sylphase SDGPS
The software-defined GPS(/GNSS) toolkit
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For each of of the interfaces there is a node to write packets to a file. As one would expect, the write-INTERFACE-file
nodes are sinks of that particular interface.
These nodes have the same arguments. The filename can be supplied as a positional argument, so the --filename
is not necessary.
The one non-intuitive thing here is that write-INTERFACE-file
nodes are not necessarily dead-ends; they will also pass through the packets if there is another node following it. An exception specific to the write-cooked-file
is that it ''needs'' to have a node following it, since the cooked interface has desired correlator configurations being sent backwards to the cooked source.
Usage:
write-cooked-file [OPTION]... FILENAME
Allowed options:
Option | Description |
---|---|
--help | produce help message |
--block | force stream source to wait to avoid buffer overrun (default: immediately abort pipeline unless --continue-on-error is used) |
--buffer-size BUFFER_SIZE (=128) | buffer BUFFER_SIZE MB of data in RAM for smoothing out disk IO latency |
--filename FILENAME | write to file named FILENAME |
--no-metadata | don't include metadata (sdgps version, command line) in output |
--stream STREAM | continually write to file with at least the last STREAM megabytes saved; maximum disk space used is approximately 3 * STREAM megabytes |
--allow-overwrite | don't exit if file already exists |
--continue-on-error | on error condition (e.g. overrun, disk full), stop writing to file, print warning every 5 seconds thereafter, and exit with nonzero exit code on pipeline termination (default: immediately abort pipeline) |
--async-startup | allow pipeline startup to proceed if open() call or write() of stream config header blocks (e.g. if writing to a pipe that does not yet have a reader) |
Type signature: (cooked->[cooked])
Here we simply write our cooked stream to a file and then continue running the node chain with tracker.
Type signature: (cooked2->[cooked2])
Here we simply write our cooked2 stream to a file and terminate the node chain.
Type signature: (observables->[observables])
Here we simply write our observables stream to a file and continue to process the solution stream.
Type signature: (raw->[raw])
Here we simply write our raw stream to a file directly with nothing else in the node chain.
Type signature: (solution->[solution])
Here we simulate a solution stream for 60 seconds and immediately write that stream to a file with nothing else.